Contains information about the context in which drawing operations take place. More...

#include <DrawContext.h>

Public Types
enum	Eye { EyeLeft, EyeRight, EyeCyclop }

enum	Task { SceneDrawTask, OverlayDrawTask }

Public Member Functions
	DrawContext ()

void	prepare (uint64 frameNum)

void	drawFrame (uint64 frameNum)
	The drawFrame method is the 'entry point' called by the display system to render a full frame. More...

void	updateViewport ()
	Updates the pixel viewport of this context, based on the actual tile viewport, active eye and stereo settings. More...

void	setupInterleaver ()

void	setupStereo ()

void	initializeStencilInterleaver ()

void	initializeQuad ()

DisplayTileConfig::StereoMode	getCurrentStereoMode ()

bool	isSideBySideStereoEnabled ()
	Utility method: returns true if side by side stereo is enabled in this context. More...

void	updateTransforms (const AffineTransform3 &head, const AffineTransform3 &view, float eyeSeparation, float nearZ, float farZ)
	Updates the viewport based on the view size and position an the size of the overall canvas. More...

Public Attributes
uint64	frameNum

AffineTransform3	modelview

Transform3	projection

Rect	viewport
	The viewMin and viewMax are normalized coordinates of the view bounds on the current tile (that is, the size of the current rendered view on the current tile). More...

Eye	eye
	The eye being rendered for this context. More...

Task	task
	The current draw task. More...

DisplayTileConfig *	tile
	Information about the drawing channel associated with this context. More...

RenderTarget *	drawBuffer

GpuContext *	gpuContext

Renderer *	renderer

DrawInterface *	drawInterface

Camera *	camera
	The camera currently rendering this context. More...

short	stencilInitialized
	Stencil initialization value. More...

short	quadInitialized

int	stencilMaskWidth

int	stencilMaskHeight

Queue< DisplayTileConfig * >	tileStack
	Tile stack Lets cameras push/pop tiles, to support rendering with custom tile definitions. More...

void	pushTileConfig (DisplayTileConfig *newtile)

void	popTileConfig ()

Detailed Description

Contains information about the context in which drawing operations take place.

DrawContext is a fully self-contained description of rendering operations that make up a full frame.

Member Enumeration Documentation

enum omega::DrawContext::Eye

Enumerator
EyeLeft
EyeRight
EyeCyclop

enum omega::DrawContext::Task

Enumerator
SceneDrawTask
OverlayDrawTask

Constructor & Destructor Documentation

omega::DrawContext::DrawContext ( )

Member Function Documentation

void omega::DrawContext::drawFrame ( uint64 frameNum )

The drawFrame method is the 'entry point' called by the display system to render a full frame.

drawFrame does all required setup operations (viewport, stereo mode etc), and calls the Renderer draw method mltiple times to draw active eyes for the scene and overlay layers. The renderer draw method in turn renders secondary cameras and performs drawing with all the active render passes.

DisplayTileConfig::StereoMode omega::DrawContext::getCurrentStereoMode ( )

void omega::DrawContext::initializeQuad ( )

void omega::DrawContext::initializeStencilInterleaver ( )

bool omega::DrawContext::isSideBySideStereoEnabled ( )

inline

Utility method: returns true if side by side stereo is enabled in this context.

Remarks: Side by side is enabled if tile stereo mode is side by side, if tile mode is default and the global mode is side by side and the global mono force mode flag is disabled.

void omega::DrawContext::popTileConfig ( )

void omega::DrawContext::prepare ( uint64 frameNum )

void omega::DrawContext::pushTileConfig ( DisplayTileConfig * newtile )

void omega::DrawContext::setupInterleaver ( )

void omega::DrawContext::setupStereo ( )

void omega::DrawContext::updateTransforms	(	const AffineTransform3 &	head,
		const AffineTransform3 &	view,
		float	eyeSeparation,
		float	nearZ,
		float	farZ
	)

Updates the viewport based on the view size and position an the size of the overall canvas.

Updates the modelview and projection matrices based on head / view transform and eye separation. Crrent eye is read from context.

void omega::DrawContext::updateViewport ( )

Updates the pixel viewport of this context, based on the actual tile viewport, active eye and stereo settings.

Member Data Documentation

Camera* omega::DrawContext::camera

The camera currently rendering this context.

RenderTarget* omega::DrawContext::drawBuffer

DrawInterface* omega::DrawContext::drawInterface

Eye omega::DrawContext::eye

The eye being rendered for this context.

uint64 omega::DrawContext::frameNum

GpuContext* omega::DrawContext::gpuContext

AffineTransform3 omega::DrawContext::modelview

Transform3 omega::DrawContext::projection

short omega::DrawContext::quadInitialized

Renderer* omega::DrawContext::renderer

short omega::DrawContext::stencilInitialized

Stencil initialization value.

If = 1, stencil has been initialized if = 0, stencil will be initialized this frame. If = -N, stencil will be initialized in N frames. The frame delay is useful to make sure OS windows and frame buffers have been updated before a stencil mask update.

int omega::DrawContext::stencilMaskHeight

int omega::DrawContext::stencilMaskWidth

Task omega::DrawContext::task

The current draw task.

DisplayTileConfig* omega::DrawContext::tile

Information about the drawing channel associated with this context.

Queue<DisplayTileConfig*> omega::DrawContext::tileStack

Tile stack Lets cameras push/pop tiles, to support rendering with custom tile definitions.

Rect omega::DrawContext::viewport

The viewMin and viewMax are normalized coordinates of the view bounds on the current tile (that is, the size of the current rendered view on the current tile).

These values are computed intersecting the tile position and size on the global canvas with the active camera view position and size. The view minimum and maximum bounds influence the frustum shape and pixel viewport. The pixel viewport coordinates of this context with respect to the owner window of the context.

The documentation for this struct was generated from the following file:

C:/dev/omegalib/release/include/omega/DrawContext.h

Public Types

Public Member Functions

Public Attributes

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation